Paper roll hoisting plug



F. vbN DER HoRs'r PAPER RLL HOISTYING PLUG May 3, 1932.

Filed July 23, 1931 f 'l i' gli l/l//lll/l y//////////// Patented May 3, 1932 UNITED STATES PATENT me FREDERICK voN DEE HoRsr, oF CHICAGO, ILLINoIs', Ass'IGNoR To THE` TRIBUNEQCOM- PANY, or CHICAGO, ILLINOIS, AV CORPORATION 0E vILLINoIs PAPER ROLL HoIsrING PLUG Application filed July 23, 19371. Serial No.'552,775.

This invention relates to an improved form of hoisting plug adapted for use in the removal of paper rolls from storage pits.

At the present time it is the common practice to use steel .plugs to effect removal of paper rolls from the hold of a ship or other storage pit. The use of steel plugs for this purpose is unsatisfactory for the reason that they have a tendency to slip out of the roll core unless the roll is maintained in a perfectly horizontal position while being lifted. Furthermore, in using steel plugs there is danger of damaging the paper when they are being dropped into the hold preparatory to making a lift. lt has been proposed to use a plug having a tip made of some material such as wood or rubber which would have less tendency to damage the paper. While such plugs are not as likely to damage the paper as are the plugs made entirely of steel, they, nevertheless, areobjectionable because of the tendency to slip from the core of the roll.

The object of my invention is to provide a hoisting plug which is so constructed as to minimize the tendency toward slipping from the core of the roll and which will not damage the paper in case it is accidently dropped onto the roll when being lowered preparatory to making a lift.

The invention will be fully understood from the following detailed description taken in connection with the accompanying drawings wherein I have shown a preferred embodiment thereof.

Referring to the drawings:

Fig. 1 is a view showing the manner of application of the lifting plugs to the core of a paper roll which is to be lifted;

Fig. 2 is a longitudinal sectional view of the improved liftingplug; and Y Fig. 3 is an end view of the plug as viewed from the right in Fig. 2.

The plug, in its preferred form, comprises: a metal shank or core, indicated generally by the numeral 4; a rubber covering 5 disposed over the portion of the shank adapted to lie within the core of the roll; and a fixture 6 affording a connection betweenythe exposed end of the plug and a lifting arm or chain 7.

apparent from Fig. 1. A

The core 4 consists of a cylindrical shell 8 which telescopes over an end plug 9, and which is provided witha peripheral flange l0 which serves as an abutment for the layer of rubber covering 5. The end plug 9 is securedn shell 8 by an anchor pinll. n-,The oppositeor forward end of shelly 8 is'reduced or tapered inwardly, as indicated at 12, the tapered wall portions being joined by a tie member. 13 which extends transversely Vacross thevv open end of the shell. A partitioning member 14 is secured in the shell r8 slightly to the rear of thetapered portion 12 and may be anchored in the shell kby a rivet 15. The rubber covering 5 may be applied to the foundation shank 4 by any approved molding operation, the rubber at the forward end of the plugbeing compressedintothe o en end of shell 8 to provide an-anchoring E rubberin the forward end of said shell, as indicated at 16. Y

The fixture 6, in the embodiment shown, consists of a collar which is supported on the free endportion 17 of end plug9. 4The ,eX- posed end of` end portion 17 Yis swaged over a washer 18 whichserves vto hold fixture 6 in permanent position on end portion 17. The fixture 6 is removablyy connected with chain 7 by means of a bolt Y19a'nd a U-link'21.v The plvotal connection betweeny the plug and chain 7 affordedrby bolt 19 allows the plug to assume a vertical position when suspended 1n inactive position on the'lower lend of said chain. i f.

The manner of use of the Vdevice will be pair of chains 7, the upper ends of which are suitably attached tothe liftingk cable, are spread to permit insertion of oneof they plugs in each end of a 1core 22extending centrally through a paper roll 23. The diameter of the lifting plug,ff kas defined by lthe V'rubber covering 5, is slightly less than the diameter of core 22, and the' free end of the plug is tapered or rounded as indicated at 24 .to facilitate insertion in the rollcore. kThe plugs being thus positioned, the roll is readily lifted by pulling upwardly on chains 7. On the upwardpull there is little tendency for the plugs to slip from the roll core, since the frictional ody of contact between the rubber covering 5 and the core walls is suiiicient to prevent slipping even though the roll be tilted slightly from the horizontal position. When the plugs are lowered into the hold or pit there is very Y little danger of damaging the paper by 1mpact with the endsfof the plugs since the rubber covering 5 completely shields the metal portions of the plug against contact with the y paper.

The foregoing detailed description has been given for clearness of understanding only,

and no unnecessary limitations should be un-v derstood therefrom, butthe appended claims should be construed as broadly as permissible in view of the prior art.

YWhat I regard as new and desire to secure by- Letters `Patent is:

1. A hoisting vdevice for paper rolls or the like comprising a rubber covered plug Y 'adapted tob'e inserted in the end of the roll core and provided at its projecting end with means affording connection with a lifting member. p K

ZIA hoisting plug for paper rolls or the likel'comprising a metal shank provided at one end with means aifording connection with a lifting member, and a rubber covering for the portion of said shank adapted to lie within the roll core.

'3. A hoisting-plug for paper-rolls or the like comprising a metal shank provided at one end with. means affording connection with a lifting member, kand a rubber 'covering for the portion of said'shank 'adapted to lie within the roll core, the free end portion of said coveringv being tapered inwardly to facilitate insertion of the plug in the roll core.

4. 'A hoisting plug for paper rolls or the like comprising a metal'shank provided near one end with a retaining flange, and a rubber "covering abutting said flange and extending over the portion of the shank adapted to lie within the core of the roll.'

5. A hoisting plug for paper rolls Aor the like comprising a metal shank provided near one end with a retaining flange, ayrubber covering abutting said flange and extending over the portion of the shank adapted folie within the core of the roll, a lifting collar positioned on the exposed end ofsaid shank 'adj acent said retaining flange, and means aitfording pivotal connection between said 'col- `lar and a lifting member. Y 2

In witness whereof, I hereunto subscribe my 'name to this specification.

FREDERICK voN DER -HoR's-T. 

